| French Open, Paris, France | 10/01 09:00 | 24 | [96] Marcos Giron v Thiago Monteiro [84] | 6-7,4-6,1-6 | |
| French Open, Paris, France | 09/29 13:55 | 23 | [202] Quentin Halys v Marcos Giron [96] | 5-7,6-3,7-6,5-7,6-8 | |
| ATP - Rome | 09/12 12:05 | 14 | [96] Marcos Giron v Ymer, Mikael [71] | 6-4,5-7,6-7 | |
| US Open, New York, USA | 09/02 15:00 | 24 | [26] Filip Krajinovic v Marcos Giron [96] | 6-4,6-1,6-3 | |
| US Open, New York, USA | 08/31 20:25 | 23 | [96] Marcos Giron v Marc Polmans [121] | 6-4,6-7,3-6,6-4,6-2 | |
| New York, USA | 08/24 15:00 | 25 | [5] Daniil Medvedev v Marcos Giron [101] | 6-4,6-4 | |
| New York, USA | 08/23 16:20 | 24 | [271] Mackenzie McDonald v Marcos Giron [102] | 6-7,5-7 | |
| New York, USA | 08/21 15:00 | 19 | [95] Gregoire Barrere v Marcos Giron [102] | 6-4,6-7,4-6 | |
| New York, USA | 08/20 16:50 | - | [102] Marcos Giron v Laslo Djere [80] | 6-2,6-2 | |
| Matchplay 120 | 07/02 22:00 | 1 | [102] Marcos Giron v Klahn, Bradley [126] | 6-7,7-6,3-6 | |
| Matchplay 120 | 07/01 22:00 | 1 | Marcos Giron v Zachary Svajda | Retired | |
| Matchplay 120 | 06/29 22:00 | - | Ernesto Escobedo v Marcos Giron | View | |
| Matchplay 120 | 06/26 22:00 | 1 | Marcos Giron v Zachary Svajda | 6-4,6-4 | |
| Matchplay 120 | 06/22 22:00 | 1 | [181] Ernesto Escobedo v Marcos Giron [102] | 7-6,7-6 | |
| Matchplay 120 | 06/19 23:00 | 1 | Marcos Giron v Zachary Svajda | 4-6,5-7 | |
| Matchplay 120 | 06/17 23:00 | - | [102] Marcos Giron v Brandon Nakashima [220] | 6-4,3-6,6-3 | |
| Matchplay 120 | 06/10 22:00 | - | [181] Ernesto Escobedo v Marcos Giron [102] | 2-6,7-6,3-6 | |
| Matchplay 120 | 06/08 23:00 | 1 | [102] Marcos Giron v Steve Johnson [63] | 6-3,6-1 | |
| Matchplay 120 | 06/05 23:00 | 1 | [181] Ernesto Escobedo v Marcos Giron [102] | 5-7,5-7 | |
| Matchplay 120 | 05/29 23:00 | 1 | Zachary Svajda v Marcos Giron | 4-6,6-3,6-7 | |
| Challenger - Indian Wells | 03/06 22:20 | 27 | [104] Marcos Giron v Brandon Nakashima [255] | 6-7,6-3,2-6 | |
| Challenger - Indian Wells | 03/05 22:25 | 26 | [163] Marcora, Roberto v Marcos Giron [104] | 6-7,1-6 | |
| Challenger - Indian Wells | 03/04 18:00 | 25 | [393] Ryan Peniston v Marcos Giron [104] | 2-6,6-7 | |
| ATP - Acapulco | 02/26 23:40 | 26 | [20] Isner, John v Marcos Giron [115] | 6-3,7-6 | |
| ATP - Acapulco | 02/25 04:55 | 25 | Marcos Giron v Lopez Villasenor, Gerardo | 6-4,7-6 | |
| ATP - Acapulco | 02/24 01:20 | 164 | [104] Taro Daniel v Marcos Giron [113] | 4-6,7-5,1-6 | |
| ATP - Acapulco | 02/23 03:50 | 64 | Hernandez Serrano, Juan Alejandro v Marcos Giron | 5-7,1-6 | |
| New York, USA | 02/13 03:10 | 26 | [113] Marcos Giron v Ugo Humbert [43] | 1-6,0-6 | |
| New York, USA | 02/11 03:10 | 25 | [141] Sock, Jack v Marcos Giron [113] | 3-6,4-6 | |
| Newport Beach, USA | 01/28 21:05 | 25 | [107] Marcos Giron v Sebastian Korda [246] | 4-6,6-3,6-7 |
Wikipedia - Marcos Giron
Marcos Giron, né le à Thousand Oaks, est un joueur de tennis américain, professionnel depuis 2014.